Combined temperature indicator and draft regulator



Nov. 22, 1927. 1,649,827

H. W. HEYMAN COMBINED TEMPERATURE INDICATOR AND DRAFT REGULATOR FiledDec.. 2o. 192e INVENTOR: v Hardf mrc/ 32 TOREYS Patented Nev. 22, 1927.

Hormon W. HEYMAN, on MAPLEwoon, NEw JERSEY.'

COMBINED TEMPERATURE vINDICATOR AND DRAFT REGULATOR.

Application led December 20, 1926. Serial' No. 155,892.

The present invention relates to a mechanis'm for controlling thefurnace draft, it being located in a remote place from which point ithas beenfound desirable to operate the furnace. in many instances it isdisadvantageous to install a complicated automatic heat regulatingsystem and yet, with suhcient changes in temperature, it ishighdesirableto be able to regulate the draftV ly without going to the furnace room.Where steam boilers are used, an automatic device is provided forshutting off the draft,

and it is often necessary to open the draft manually at different times.The present invention therefore, provides a manual means for permittingthe normally weighted arm to open the draft, and yet while open,

permits the automatic control to shut vofi` the draft. Movement of themanual means in the reverse direction positively closes the draft.

The present invention'provides a simple and effective control mechanismfor steam boilers of the above type, by means of which the draft may beopened manually from a remote point and is analogous to the inventiondisclosed in the co-pending application Ser. No. 132,712, whereinmovement of the manual means positively opens the draft and holds itopen until the means is returned to the closed position. This type isadapted for use in furnaces etc., which do not have the automaticfeatures of steam boilers.

an object of the present invention is to provide a structure which willnot only mount the temperature indicating means but also serve as a.part of the means for manually controlling the furnace draft sys tem.Simplicity and effectiveness charac`- terize the structure herein set.forth and the advantage of mounting the control upon an element whichalso mounts a temperature indicating means will be apparent since thedraft is controlled after `observation of the temperature indicatingmeans. VBy'providing a single mounting which secures both of the aboveelement-s, great convenience is provided.

Reference will now be had tothe accom-k panying drawings forming a parthereof wherein: Figure 1 is a front elevation of the present invention,showing a common mounting means for the two elements noted above.

As noted in the above kco-pending case,`

2-2 of Figure'l and looking inthe direction of the arrows. 1 Y

Figure 3 is a rear elevation of the device shown in Figure 1. y Y

Figure 4 is a diagrammatic illustration' of the invention installed tooperate the furnace draft of a 'steam boiler.

`In the drawings a' indicates a block of suitable material which may besecured to any convenient part of the vframe work of a building b bymeansy of'screws c. VThe front of the block carries a thermometer Zandthe rear thereof is provided with a countersunk groove e and, inaddition, a slot f below the groove e. lfVithin the slot f a metallicangle piece or slide g is received. A cap h is secured within the groovee and 'confines the angle piece g to vertical Figure Qis a sectiontakenon the line movements, there being a spring clip i within a pressed outportion j of the cap which spring element serves to urge the metal anglepiece g against the back of the slot The spring 7c is lsecured at koneend to the bottom of the angle piece gand at the other end to the toplof the block, the points at which the spring is secured beingdesignated respectively, as k and k2. The rearwardly extending arm g ofthe angle piece g has ysecured thereto a cord Z which is connected tothefurnace control` rod m, the weights of which normally hold the draftopen. When the handleportion g2 ofthe angle piece g is moved upwardlythe draft is closed, the spring 7c serving to help overcome the weightedarm m. By moving the handle g2 downwardly the weights open the draft inan obvious manner. It is apparent that the specific elementsl formingthe combination set forth herein may .be arranged in a different mannerwithout departing from the scope of the invention as set forth in theapended claims.

What I claim is:

1. In a draft control, a' thermometer base, means for securing it'to awall, a manuall operated slide for controlling the dra t regulator of aheating plant, an outwardly projecting arm at the bottom of the slidefor manual operation, an inwardly projecting arm at the top of theslide, means to yconnect the last named arm to the draft cona spring-conneeted to the lower yend of the slide and :to the upper end of thebase tending to urge the slide to an o position. l

2. As an article of manufacture, a draft control for a heating plantcomprising a base, means for securin it 'to -a wall, v-a manuallyoperable slide Yor controlling the draft regulator of a heating plant,an :outwardly projecting arm at the bottom of the slide .ttor manualoperation, an inwardly projie'cting :arm at vthe -ftop of the slide,means to connect the last named Varm to the draft control means oftheheating pla-nt, -a `o'han- 'the upper Jend 'of the base tending tourge the slide to an o position and to assist in manual Ioperation ofthe slide.

Tfhis specification signed this 17th day of December, A. TD. 1926.

HORACE W. HEYMAN.

